MESON Chess Problem Database

Problem Display
PID: 194687 (B5b1/5Np1/p4n2/K1kPRNB1/pR6/3r4/q7/8 w - - 0 1)

Makaronets, Leonid

Best Problems, 2019

B5b1/5Np1/p4n2/K1kPRNB1/pR6/3r4/q7/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Bxe3#
    • 1...Rxd5
      • 2.Be3#
    • 1...Sg4
      • 2.Be7#
    • 1...Sxd5
      • 2.Be7#
    • 1...Sh5
      • 2.Be7#
    • 1...Sd7
      • 2.Be7#
    • 1...Sh7
      • 2.Be7#
  • Tries
    • 1.S7d6?
      • threat
        • 2.Sb7#
      • 1...Qxd5
        • 2.Rc4#
      • 1...Rxd5
        • 2.Be3#
      • 1...Sxd5
        • 2.Se4#
      • 1...Bxd5!
    • 1.Sd8?
      • threat
        • 2.Sb7#
      • 1...Rxd5
        • 2.Be3#
      • 1...Bxd5
        • 2.Se6#
      • 1...Sxd5
        • 2.Be7#
      • 1...Qxd5!
    • 1.Be3+?
      • 1...Rd4
        • 2.Bxd4#
      • 1...Rxe3!
  • Keys
    • 1.S5d6!
      • threat
        • 2.Sb7#
      • 1...Qxd5
        • 2.Rc4#
      • 1...Rxd5
        • 2.Be3#
      • 1...Sxd5
        • 2.Se4#
      • 1...Qc4
        • 2.Rxc4#

This is after

After Colanari.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::B(F),XR(b)
    • R(b);N_GUARD,P_SPINR(b),XP(C)::B(F)
    • S(f);OGATE::B(F)
    • S(f);OGATE,P_SPINS(f),XP(C)::B(F)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a),XP(C)::R1(A)
        • R(b);N_GUARD,P_SPINR(b),XP(C)::B(F)
        • S(f);N_GUARD,P_SPINS(f),XP(C)::S(G)
      • Refutation
        • B(h);P_SPINB(h),XP(C)
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • R(b);N_GUARD,P_SPINR(b),XP(C)::B(F)
        • B(h);N_GUARD,P_SPINB(h),XP(C)::S(G)
        • S(f);OGATE,P_SPINS(f),XP(C)::B(F)
      • Refutation
        • Q(a);P_SPINQ(a),XP(C)
    • Try
      • B(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::B(F),XR(b)
      • Refutation
        • R(b);XB(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • Q(a);N_GUARD,P_SPINQ(a),XP(C)::R1(A)
      • R(b);N_GUARD,P_SPINR(b),XP(C)::B(F)
      • S(f);N_GUARD,P_SPINS(f),XP(C)::S(E)
      • Q(a);N_GUARD::R1(A),XQ(a)
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